Download PALM Probe Users Manual

PALM Probe Users Manual
EIT Inc.
108 Carpenter Drive
Sterling, VA 20164
Phone: 703-707-9067
Fax: 703-478-0815
Email: [email protected]
Internet: www.eitinc.com
EIT GUIV 0006201 REV B 3/02
PALM Probe Users Manual
2002 Electronic Instrumentation and
Technology, Inc. (EIT, Inc.) Sterling, VA USA
All rights reserved
PALM Probe is protected by United States
Patent D451, 413
PALM Probe is a trademark of EIT, Inc.
2
Table of Contents
1.
Palm Probe Overview
Introduction
Diagram Of Unit
Theory Of Operation
2.
Preparation For Use
Manual Conventions
Equipment Markings
3.
Unit Operation
Description of PALM Probe and its Features
PALM Probe Displays
4.
Interpretation and Understanding of PALM Probe Readings
Introduction
Irradiance Readings and Values
Sample and Hold
UV Energy Density
Collection Techniques
Coordination with EIT On-line Monitoring Equipment
Process Control
5.
Maintenance
PALM Probe
Batteries
Calibration
Product Warranty
Warranty Returns
Non-Warranty Returns
Troubleshooting
6.
PALM Probe Specifications
7.
Appendix
Metric System Basics
List of Figures and Illustrations
3
1.
PALM Probe Overview
Introduction
The PALM Probe radiometer from EIT addresses UV measurement and
process control in areas where it has been difficult to pass a radiometer
through the process. The use of UV inks and coatings has grown in label
and web markets and the PALM Probe offers safe, reliable measurement
for these and other applications.
The word PALM is an acronym for Production Ambient Light
Measurement. The PALM Probe has an extremely wide dynamic range
and is capable of measuring from very low to high levels of UV light.
The physical conditions inside a UV curing chamber are harsh. There are
wide temperature variations that an instrument must withstand. A
tremendous amount of electrical energy is needed to excite the mercury
and/or other additives in the UV bulb in order for the bulb to emit UV
radiation. The PALM Probe is designed to withstand the harsh physical
conditions of the UV curing chamber as well as protect the operator (and
instrument) from the high electrical energy present.
Figure 1-Photo of PALM Probe
4
Diagram of Unit
7
8
6
3
4
5
2
1
Figure 2- Drawing of the PALM Probe
#
Name
1
2
Input Aperture
Light Guide
3
SELECT Button
4
RUN/STOP Button
5
Probe Body
6
Underside
7
Rear Cap-Battery Cover
8
Display
Description
(Operational details of the PALM Probe
can be found in Section 3-Unit Operation)
Opening where light enters the instrument
Ceramic coated non-conductive probe
inserted into UV chamber
Allows the unit to switch between watts,
joules and seconds
Starts and stops a reading.
Starting also clears previous reading
Contains optics, display, battery and
electronics
Summary Instructions, Contact Information,
Serial Number & Model Number
Access to battery compartment, calibration
label
LCD display
5
Theory Of Operation
Ultraviolet, visible and infrared light radiation impinges on the Input
Aperture at the tip of the PALM Probe Light Guide. The light is diffused
as it passes through the Input Aperture at the tip of the Probe. The
diffused light is directed down the Light Guide of the PALM Probe to a
UV filter and photodetector. The UV filter blocks the visible and infrared
spectra and passes only the UV channel of interest to the photodetector.
The photodetector converts the light energy to a current that is
proportional to its intensity. The signal is conditioned, digitized,
processed and displayed on the LCD of the PALM Probe.
2.
Preparation For Use
Fresh batteries are inserted into the PALM Probe during the initial
calibration and it is ready to use. EIT strongly suggests that the operator
thoroughly read the PALM Probe User’s Manual to become familiar with
the unit before attempting to use it.
Manual Conventions
The following conventions are used in this manual:
WARNING
Statements that identify conditions or practices which
may result in personal injury or loss of life
CAUTION
Statements that identify conditions or practices which
may result in damage to the equipment or other property
Notes to the operator appear throughout the PALM Probe User’s Manual
to aid in the understanding and operation of the unit.
Equipment control and indicator names appear in all capital letters, i.e.
“SELECT” button. The terms watt and joule are not capitalized while the
letter abbreviations (W, J) are.
Equipment controls and indicators that are unmarked have their first
letters capitalized only, i.e. “Battery Cover”.
PALM is always capitalized and is an acronym for Production Ambient
Light Measurement.
Terminology, definitions and conventions come from and follow
RadTech’s Glossary of Terms for Ultraviolet Curing Process Design and
Measurement.
6
Equipment Markings
Each PALM Probe contains a Serial Number and Model Number. This
can be found on the sticker attached to the bottom of the unit below the
Quick Instructions on the unit. The UV bandwidth that the unit measures
can be determined from the three digits following the model number of
the unit.
PRB-365- EIT
UVA Measures 320-390 nm
PRB-313- EIT
UVB Measures 280-320 nm
PRB-405- EIT
UVV Measures 395-445 nm
Each PALM Probe contains a Calibration Sticker, which is attached to
the Battery Cover. The Calibration Sticker contains the date of
calibration, initials of the calibrating technician and the calibration
expiration date.
3.
Unit Operation
WARNING-ELECTRICAL SHOCK!
Risk of electric shock. UV cure systems contain high voltages.
Refer to the UV system documentation for further information.
WARNING-ULTRAVIOLET RADIATION!
Risk of exposure to ultraviolet radiation. Although this product is
not a source of UV light, it is used in a UV environment. Refer to
the UV system documentation for recommended protective
measures including eye and skin protection.
WARNING-HIGH TEMPERATURE!
The Light Guide of the PALM Probe may be hot when removing
it after exposure to UV radiation.
WARNING-INSTRUMENT DAMAGE!
The Light Guide of the PALM Probe was not designed for
permanent installation or extended time readings in a UV system.
The Light Guide should not be exposed to temperatures above
750ºF (400ºC) for extended periods of time.
CAUTION-INSTRUMENT DAMAGE!
Read the manual completely before using the PALM Probe to
avoid damaging the instrument.
7
Description of PALM Probe and its Features
(Numbers refer to the diagram on page 5 of the manual)
Input Aperture Light enters the unit through the opening at the tip of
the Light Guide. The Input Aperture and Light Guide
should be kept clean and should not be inserted into
1
liquids. The protective window over the Input Aperture
contains a diffuser and appears ‘cloudy’ to the human
eye. If necessary, clean the Light Guide and Input
Aperture window only with Isopropyl Alcohol and a
lint free cloth. After cleaning the Input Aperture with
Isopropyl Alcohol, the input window may turn clear.
The user must wait for all of the alcohol to evaporate
and allow the window to return to its normal ‘cloudy’
state before use.
Light Guide
2
The Light Guide is constructed of aluminum and then
coated with a non-conductive material to insulate and
protect the user from accidental shock while taking
measurements. The Probe Body is also isolated from
the Light Guide by a non-conductive Delrin block. To
prevent damage to the unit, the PALM Probe should be
stored in the supplied protective case when it is not
being used.
Buttons
The RUN/STOP and SELECT buttons are membrane
switches. The buttons are raised and can be easily
located, identified and operated without having to look
at them. A gentle push is all that is needed to operate
the switches. Press either RUN/STOP or the SELECT
button to turn the unit on.
SELECT
The SELECT membrane switch toggles the unit
between watts/cm2 (W/cm2), joules/cm2 (J/cm2) and
seconds. The SELECT switch can be used while the
unit is actively taking a reading or after the data has
been collected.
3
RUN/STOP
4
The RUN/STOP membrane switch toggles the unit
between Run and Stop modes. Data collection begins
immediately when the RUN/STOP switch is pressed.
Entering Run Mode also clears the previous reading.
8
Probe Body
5
Underside
6
Rear Cap
7
The Probe Body contains the detection optics,
electronics, battery and display functions of the unit.
Access to the batteries is provided through the Rear
Cap of the Probe Body. There are no user serviceable
parts inside the Probe Body. The Probe Body can be
held with either an ‘over’ or ‘under’ hand type of grip.
A right-handed ‘over’ the unit grip allows the
membrane switches to be operated with the right
thumb. A right-handed ‘under’ the unit grip allows the
membrane switches to be operated with either the
middle or first finger on the right hand. The left hand
can also easily operate the unit with either an over or
under grip.
Summary operating instructions and EIT contact
information is printed on the bottom of the Probe
Body.
The Rear Cap provides access to the PALM Probe
batteries. There are no user serviceable parts inside the
Probe Body.
Battery Life
Battery life is estimated at 25 hours of continuous use
on the PALM Probe. The LCD will display LO BATT
when approximately 45 minutes remain on the
batteries. Access is provided through the Rear Cap to
change the batteries. Remove the four screws to access
the two AA batteries. Use only alkaline 1.5V
replacement batteries. Use of rechargeable batteries is
not recommended. Refer to Section 5 of this Users
Manual for a diagram and detailed instructions on
changing the batteries.
Display
8
The Display enables viewing of the LCD. The Display
should be cleaned only with a damp, lint free cloth.
The Liquid Crystal Display (LCD) is located under the
display window. A diagram of the LCD is shown and
described in the next section under PALM Probe
displays. (Pages 11-13)
9
Additional PALM Probe features
Auto Range
The PALM Probe has a very wide dynamic range that
automatically adjusts itself for the user. The PALM
Probe measures UV light from approximately 100
microwatts/cm2 (µW/cm2) up to 10 watts/cm2 (W/cm2)
in whichever wavelength band (UVA, UVB, and UVV)
was installed when the unit was manufactured.
Readings below 100 µW/cm2 are possible and will be
displayed on the LCD. The decimal point in the LCD
‘floats’ over three places to cover the wide dynamic
range on the unit. The “m” in both the mW/cm2 and
mJ/cm2 on the LCD display may be present or absent
to allow the unit to display a wide range of numbers. It
is important to carefully observe (and record) the
readings obtained with the PALM Probe, noting the
position of the decimal point and the units displayed on
the LCD
Auto Off
The PALM Probe will enter an off mode 10 minutes
after the last button activity. The last reading is saved
when the unit enters off mode. Pushing either button
will turn the unit back on and the last reading will be
displayed.
Manual Off
The PALM Probe can also be turned off manually. A
long (greater than 0.5 second) RUN/STOP press will
turn the unit off.
Audible Beeper The PALM Probe is equipped with an Audible Beeper
that is used to confirm membrane switch operation.
The Beeper will sound whenever a membrane switch is
pushed.
10
PALM Probe Displays
The following section of the manual explains the PALM Probe Display.
The display is intuitive and easy to read. The best way to become
familiar with the PALM Probe is to actually take some readings with it.
The following figure shows all available LCD segments on the PALM
Probe. In operation, the user will not see all of the segments at the same
time.
Indicates UV
bandwidth of unit
“Flashes” when
collecting data
Low Battery
warning
Units
Displaywatts,
joules or
seconds
4-digit display with
floating decimal point
Probe Body temperature-displayed
when entering run mode
Figure 3. Full segment PALM Probe LCD Display
The following section goes over the various displays the user will see
when the PALM Probe is used. Button or Membrane Switch action is
described in the box on the left with a diagram of the PALM Probe LCD
on the right.
11
Figure 4. Unit Turn On
SELECT or RUN/STOP wakes
the unit up. The display will show
the firmware revision (PX.XX)
for approximately 2 seconds
before showing the information
from the last reading. The display
starts with watts and the user can
use the SELECT button to scroll
from watts to joules to seconds on
the display.
Figure 5. Entering and
Collecting Data
Pressing RUN/STOP while in
Stop mode will start a new
collection. The PALM Probe
will clear the previous reading,
display
the
Probe
Body
temperature and enter the new
data collection or run. SELECT
push during Run or Stop Mode
toggles Unit Value displayed
between watts, joules or seconds.
The LCD will flash ‘Run’ during
data collection. The LCD first
displays the same unit value that
was on the display before starting
the data run. Data collection
begins immediately. If the unit is
in Seconds Mode, the timer will
start
counting
while
the
temperature number is being
displayed for approximately two
seconds.
Flashing
12
To stop collecting data, push the RUN/STOP button. Display stays on the
unit value that was last on the LCD screen while collecting data.
SELECT press toggles the unit between the watts, joules and seconds
displays of the last run. The watts displayed will be the peak irradiance seen
by the unit during data collection. Information is stored in the unit until it is
cleared prior to a new run. Unit turns off automatically after 10 minutes of
button inactivity.
Figure 6-Manual Turn Off
To manually turn off the PALM
Probe, push the RUN/STOP button
for greater than 0.5 second. The
audible beeper will sound and
when the RUN/STOP button is
released, the LCD will display
“OFF”, then power the unit off.
4.
Interpretation and Understanding of PALM
Probe Readings
Introduction
The PALM Probe radiometer is designed to allow the user to easily
collect UV Irradiance and Energy Density information from a UV curing
system. Once this information is collected, the user has to understand
how to interpret and apply this information to achieve process control for
a particular application.
Three values are available on the PALM Probe display once a reading or
run has been made. The SELECT button allows the user to toggle
between watts-joules-seconds after the data collection is finished. Most
users will find that the irradiance value is the most important value
collected by the PALM Probe for process control.
13
Irradiance Readings and Values
The PALM Probe has the ability to measure irradiance over a very wide
dynamic range. It has the ability to measure very low amounts of UV that
are found in ambient room light up to very intense amounts found in the
most powerful UV curing systems.
UV Irradiance is the radiant power arriving at a surface from all forward
angles, per unit area. The PALM Probe uses square centimeter (cm2) as
the unit area for reporting irradiance. (Intensity, a generic term with a
variety of meanings is also commonly used to mean irradiance, which is
the preferred term.) It is important when talking about irradiance to also
define a wavelength range. The wavelength range that the PALM Probe
reports will depend on the filter-detector combination installed in the unit
when it was ordered. (Refer to Section 2 of this manual under equipment
markings if you need to determine the UV bandwidth of your particular
instrument.)
It is also important to talk about angular or spatial response when talking
about irradiance. Most EIT Instruments exhibit a cosine or near cosine
response in the optics because most coatings are thought to respond to
UV radiation in a cosine fashion. The PALM Probe in order to be durable
and withstand the sustained high temperature environment extremely
close to the UV source has a narrower spatial response. Light arriving at
very low incident angles to the Input Aperture does not get measured.
Normalized Response
Cos Response Curve of Palm Probe
(metal tip)
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
-90 -80 -70 -60 -50 -40 -30 -20 -10 0
Ideal Cos
Response
Palm Probe-New
Optics
10 20 30 40 50 60 70 80 90
Angle (deg.)
Figure 7-Spatial response
14
The PALM Probe displays the irradiance values in watts or milliwatts per
square centimeter (W/cm2 or mW/cm2) on the LCD. The user has to
carefully note the position of the decimal point in the reading and
whether or not the display is showing W/cm2 or mW/cm2 on the display.
The floating decimal point on the numerical display allows values as low
as 0.001 mW/cm2 or 1 µW/cm2.
For help in understanding prefixes and symbols ‘milli’ (m) and ‘micro’
(µ) please see the section on metric system basics in the appendix.
The PALM Probe is designed to measure UV Irradiance values up to 10
watts/cm2, which is higher than UV irradiance values of most current UV
sources.
Sample and Hold
When collecting irradiance data with the PALM Probe, the display will
change as the Input Aperture changes position under the UV source. As
the Input Aperture moves into the focused peak irradiance area of the UV
source, the reading will increase.
UV housing and
reflected light
Profile of UV
irradiance (y-axis) vs.
time, obtained with
EIT PowerMAPTM
Figure 8-Irradiance variations
15
Variations in irradiance may also be seen when the PALM Probe is
moved along the length of a UV bulb in addition to moving the Probe in
and out of the focus of the UV lamp.
The PALM Probe display will automatically change ranges as the
irradiance level of the UV light fluctuates. It is important to carefully
observe the location of the decimal point and corresponding units
(mW/cm2 or W/cm2) on the LCD. Pressing the RUN/STOP button, while
in Run Mode, will stop the collection of data. The highest irradiance
value recorded by the PALM Probe will be the value displayed on the
LCD. The PALM Probe uses a digital processor with an effective sample
rate of 5Hz.
UV Energy Density
UV Energy Density is the radiant energy arriving at a surface per unit
area. It is the time integral of irradiance. (One watt for one second is
equal to one joule.) The PALM Probe calculates and displays the Energy
Density values in joules or millijoules per square centimeter (J/cm2 or
mJ/cm2) on the LCD. (Dose is a common but loosely used term that has
been adopted from other technologies for Energy Density.)
Pushing the SELECT button will toggle the display from watts to joules
while the unit is in the Run or Stop mode. The energy density is an
integration of irradiance values over a given elapsed time. For a given
time exposure, the higher the irradiance values, the higher the UV Energy
Density. As with irradiance values, it is also important to carefully
observe the location of the decimal point and corresponding units (J/cm2
or mJ/cm2) on the LCD. The floating decimal point on the numerical
display allows the PALM Probe to start displaying Energy Density at
0.001 mJ/cm2 or 1 µJ/cm2.
For help in understanding metric system prefixes and symbols ‘milli’
(m) and ‘micro’ (µ) please see the appendix at the end of the PALM
Probe manual. The PALM Probe can accumulate UV Energy Density
values up to 9995 joules/cm2.
Collection Techniques
Consistent collection and positioning techniques must be used in order to
obtain consistent readings that can be used for process control. Placement
of the PALM Probe in the same location in the UV system is important to
get repeatable irradiance values. Figures 9-13 describe several of the
accessories available from EIT to assist in the placement of the PALM
Probe Input Aperture.
16
When collecting Energy Density readings, the PALM Probe has a built in
timer to allow you to monitor the ‘time component’ of the Energy
Density reading. Press SELECT in order to move to the Seconds display
on the PALM Probe.
Figure 9-EIT PALM Probe
Locking Ring
The Locking Ring slides over the
Light Guide and allows the user
to consistently place the PALM
Probe at the same depth in the
UV system for each reading. A
Locking Ring is supplied
standard with each PALM Probe.
Figure 10-EIT PALM Probe
Locator Kit
The PALM Probe Locator Kit
allows the Light Guide to be
placed in the same location
each time a measurement is
made. The Locator Kit can be
mounted in either an external or
internal position on the housing
based on the available space on
in UV housing/system. The
Locator Kit is available with or
without a hinged door. In
mounting locations where the
UV light may be a hazard, the
door protects the user from
stray UV light. All Locator Kit
Figures shown with the door.
(Also see Figures 11 -13).
17
Mounting
Holes
Figure 11-Locator Kit Template
UV System
housing
UV Source
Figure 12-Locator Kit External Mount on UV System
18
UV System
housing
UV Source
Figure 13-Locator Kit-Internal Mount on UV System
Coordination with EIT On-line Monitoring Equipment
The readings from the PALM Probe can be coordinated with the readings
obtained from any of EIT On-line monitoring displays. One of the EIT
UV sensors needs to be installed in the lamp housing where it either gets
a direct view of the UV or a representative sample of the UV being
produced by a system. When conditions are ideal (clean reflector, new
UV lamps), the EIT displays can be set to read 100% UV intensity.
Baseline readings of the UV intensity can be obtained with the PALM
Probe. The UV will generally decrease over time as the reflectors and
UV bulbs change. The readings displayed on the EIT On-line monitors
can be compared to the readings on the PALM Probe. The On-line
monitors can provide continuous monitoring including alarm functions
and feedback information. The PALM Probe also allows users to
compare readings between systems.
Process Control
Each UV process has an optimal process ‘window’
reaction takes place producing the desired results in
cured.
The ‘window’ is specific and is based
application process and UV chemistry being used.
in which the UV
the product being
on the substrate,
Operating in the
19
defined process ‘window’ increases the chances of producing a quality
product acceptable to the end user.
Regular UV measurement and recordings of the measurements on a log
increases the chance of staying within a particular ‘process window’. The
process log can be as simple as keeping track of the readings on a
clipboard next to the UV cure station. The process log will minimize
down time, increase product throughput and drive preventative
maintenance programs. A table can be easily made to track the variables
specific to your process.
Date
Lamp
#
Process
Speed
(fpm)
Lamp Setting
WPI
Minimum
Irradiance
Needed
Measured
Irradiance
Figure 14-Sample Process Control Worksheet
5.
Maintenance
PALM Probe
The PALM Probe should be stored in the protective padded carrying case
when it is not being used. Do not immerse the PALM Probe Light Guide
or Probe Body in any liquids. If needed, the Probe Body can be wiped
down with a damp lint free cloth and dried before storage. The Light
Guide also needs to be kept clean. The Light Guide and Input Aperture
can be cleaned with Isopropyl Alcohol and a lint free cloth. Be careful
not to scratch the Input Aperture. The protective window over the Input
Aperture contains a diffuser and appears ‘cloudy’ to the human eye.
After cleaning the Input Aperture with Isopropyl Alcohol the input
window may turn clear. The user must wait for all of the alcohol to
evaporate and allow the window to return to its normal ‘cloudy’ state
before use.
20
Batteries
The PALM Probe uses two AA batteries. Battery life is estimated at 25
hours of continuous use on the PALM Probe. The LCD will display LO
BATT when approximately 45 minutes remain on the batteries. Access is
provided through the Rear Cap to change the batteries. Remove the four
screws to access the two AA batteries. Use only alkaline 1.5V
replacement batteries. Use of rechargeable batteries is not recommended.
Battery orientation indicators are engraved under the battery door. When
looking into the unit, the battery on the left should be inserted with the
negative side to the Rear Cap. The battery on the right should be inserted
with the positive side out toward the Rear Cap. Please refer to Figure 15
to assist in changing the batteries. There are no user serviceable parts
inside the Probe Body.
Calibration
Information
End View
Rear Cap removed
Figure 15-PALM Probe Rear Cap-Battery Chamber
Calibration
EIT, Inc. recommends that the PALM Probe be calibrated every six
months. The calibration expiration date is located on the calibration
sticker, which is located on the Rear Cap.
A Return Material Authorization number is not needed when shipping
the unit back for calibration. It is recommended that the unit be carefully
boxed and shipped back to EIT in the protective case provided with the
unit. Be sure to include your company name and a contact person,
daytime telephone number, fax number or email address with the unit.
Payment is expected at the time of calibration unless other arrangements
have been made with the Customer Service Supervisor.
21
Return the unit to:
EIT-IM (Instrument Markets)
108 Carpenter Drive
Sterling, VA USA 20164
Information on calibration can also be found on the EIT website:
www.eitinc.com
Product Warranty
EIT, Inc. warrants that all goods described in this manual shall be free
from defects in material and workmanship. Such defects must become
apparent within six months after delivery of the goods to the buyer.
EIT’s liability under this warranty is limited to replacing or repairing the
defective goods at our option. EIT shall provide all materials and labor
required to adjust, repair, and/or replace the defective goods at no cost to
the buyer only if the defective goods are returned, freight prepaid to EIT
during the warranty period.
EIT, Inc. shall be relieved of all obligations and liability under this
warranty if:
1.
2.
3.
4.
The user operates the device with any accessory, equipment, or
part not specifically approved, manufactured or specified by
EIT, Inc., unless the buyer furnished reasonable evidence that
such installations were not a cause of the defect. This provision
shall apply to any accessory, equipment, or part that does not
affect the proper operation of the device.
Upon inspection, the goods show evidence of becoming
defective or inoperable due to abuse, mishandling, misuse,
accident, alteration, negligence, improper installation, lack of
routine maintenance, or other causes beyond our control.
The goods have been repaired, altered, or modified by other
than EIT authorized personnel
The buyer does not return the defective goods, freight prepaid to
EIT within the applicable warranty period
There are no warranties that extend beyond the description on the face
hereof. This warranty is in lieu of-and is exclusive of-any and all other
expressed, implied or statutory warranties or representations. This
includes merchantability and fitness, as well as any and all other
obligations or liabilities of EIT, Inc. EIT Inc. shall not be responsible for
consequential damages resulting from malfunctions of the goods
described in this manual.
22
No person, firm or corporation is authorized to assume for EIT, Inc. any
obligation or liability not expressly provided herein except in writing
duly executed by an officer of EIT, Inc.
If any portion of this agreement is invalidated, the remainder of the
agreement shall remain in full force and effect.
This warranty shall not apply to any instrument or component not
manufactured by EIT, Inc.
Calibration/Repair Warranty
The warranty for repair service and periodic calibration is as stated for a
new unit, above, except that the warranty period is ninety (90) days.
Warranty Returns
When returning the unit under warranty, please return the PALM Probe
in the original or equivalent packaging to EIT, Inc. You will be
responsible for damage incurred from inadequate packaging.
The purchaser is responsible for insuring the unit during transportation to
EIT, Inc.
Equipment repaired under warranty will be returned to the user with no
charge for the repair or shipping. EIT will notify you of repairs not
covered by warranty and their cost prior to performing any work on the
equipment.
EIT, Inc. reserves the right to make changes in design at any time without
incurring any obligation to install the same on units previously
purchased.
A Return Materials Authorization (RMA) is required when shipping
the unit back for warranty service. Contact EIT via phone, fax, email
or our web site to obtain an RMA. Include your company name, address,
telephone number, fax number and email address on your shipping
documents. You will be advised of the expected turnaround time on the
unit once it is received and evaluated at EIT.
Ship the unit freight prepaid, to:
EIT-IM
108 Carpenter Drive
Sterling, VA USA 20164
23
Non-warranty Returns
The Instrument Markets group of EIT provides repair service. Repair
service on calibrated units includes calibration after the repairs are
effected. Please return the equipment in the original or equivalent
packaging. You will be responsible for damage incurred from inadequate
packaging. The customer is responsible for insuring the unit during
transportation to EIT, Inc.
A Return Materials Authorization (RMA) is not required when shipping
the unit back for calibration or repair. Include your company name,
address, telephone number, fax number and email address on your
shipping documents. You will be advised of the expected turnaround
time on the unit once it is received and evaluated at EIT.
Ship the unit freight prepaid, to:
EIT-IM
108 Carpenter Drive
Sterling, VA USA 20164
Troubleshooting
The PALM Probe has been engineered and manufactured to offer years
of reliable service. The unit is checked each time that it is returned to EIT
for calibration. Internal error checking occurs regularly. In the event of
an internal error, the error code display below appears. Many of the error
codes will correct themselves with a push of the RUN/SELECT button. If
the error does not correct itself, the user should note the error code and
contact EIT. Error codes are also listed below in Figure 16.
Error Code
E-00
E-01
E-02
E-03
Error
EEPROM Acknowledge Error
EEPROM Check Sum Error
Watch Dog Time Out
Uninitialized EEPROM
Figure 16-LCD Error Code Display
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6.
Specifications-PALM Probe Radiometer
Electrical Specifications
UV Range
UV Spectral Response
UV Accuracy
Display
User Interface
Operating Temperature
Range
Time-out period
Batteries
Battery Life
100µW/cm2-10W/cm2
UVA 320-390 nm, UVB 280-320 nm,
UVV 395-445 nm
± 5% Typical, ± 10 % Maximum
LCD, 4 digit with floating decimal point
Two push button membrane switches
0-70°C, Probe Body temperature
10 Minutes
Two “AA” 1.5 V Alkaline
25 Hours, LO Battery warning with 45
minutes left
750ºF (400ºC) on a continuous basis, much
higher for measurement length exposures
0-9995 J/cm2
5 Hz
Light Guide Temperature
Resistance
Total Energy Density
Effective Sample Rate
Mechanical Specifications
Overall Length
25.75” (65.4 cm)
Probe Body Length
7.5” (19.0 cm)
Light Guide Length
18.25” (46.4 cm)
Weight
21 ounces (596 grams)
Materials
Aluminum, non-conductive ceramic coating,
Delrin
Carrying Case
Scuff resistant nylon cover, cut polyurethane
interior
7.
Appendix
Metric System Basics
In the metric system, the units are represented by the base unit of
measure, which is often preceded by a prefix, letter or symbol indicating
the multiplication factor with respect to the base unit.
Unit
centi
milli
micro
nano
Symbol
c
m
µ
n
Fraction
1/100
1/1000
1/1,000,000 (million)
1/1,000,000,000 (billion)
Exponent
10-2
10-3
10-6
10-9
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The base unit for length measurement is the meter (m). Common
prefixes used in the metric system for length are centimeter, millimeter or
kilometer. Each prefix indicates the relationship of the units to the
original meter. Centimeter is 1/100th of a meter, millimeter is 1/1000th of
a meter and kilometer is 1000 meters. Different portions of UV in the
electromagnetic spectrum as often identified by their wavelengths
described in nanometer (nm) units.
For example, EIT’s UVA
instruments measure between 320-390 nm.
The watt (W) is the base unit used to measure power in the metric
system. The joule (J) is the base unit used to measure energy in the
metric system.
The same numerical value can be expressed several ways based on what
units you attach to the numbers. For example:
1J = 1000 mJ = 1,000,000 µJ
3W = 3000 mW = 3,000,000 µW
List of Figures and Illustrations
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
Figure 12.
Figure 13
Figure 14.
Figure 15.
Figure 16.
Photo of PALM Probe
Drawing of Unit
Full Segment LCD Display
Unit Turn On
Entering and Collecting Data
Manual Turn Off
Spatial Response
Irradiance Variations
PALM Probe Locking Ring
PALM Probe Locator Kit
PALM Probe Locator Kit Template
Locator Kit External Mounting
Locator Kit Internal Mounting
Sample Process Control Log
PALM Probe Rear Cap-Battery Chamber
Error Code LCD
EIT GUIV0006201 REV B 3/02
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